I don't think it's the model, but rather the combination of the Palm OS, Hotsync version and Palm Desktop version that matter. Check out
http://www.maximizer.com/support/products.html#pda for the supported versions. As an FYI, I'm using a ZIRE 71 and had some problems but it's now working well.
To fix my issues I had to uninstall Maxlink (using both Control Panel and manual intervention - check with Max tech support for the uninstall document), then reboot, then uninstall Palm desktop & hotsync (again, using both Control Panel & manual intervention as per Palm tech support document). Reboot again, then install Palm/Hotsync and test to ensure syncing worked. It did, so I hard reset my Palm (erasing all the data), then re-installed Palm Link. My first Max sync I only synced the Address Book, with Max overwriting the Palm. Then switched that to "Syncronize" and synced again. When I was satisfied that workd, I added "Hot List" but still only in "Max over-write Palm" mode - etc., one app at a time.
Everything looked fine, but hot syncing broke a couple of days later. After a bit of attempted trouble-shooting it started to work again (no idea why from what I could see) and has been fine ever since.
- R.